.. _license:

=====================
License and Copyright
=====================

License
=======

IPython is licensed under the terms of the new or revised BSD license, as follows::

    Copyright (c) 2008, IPython Development Team

    All rights reserved.

    Redistribution and use in source and binary forms, with or without modification,
    are permitted provided that the following conditions are met:

    Redistributions of source code must retain the above copyright notice, this list of
    conditions and the following disclaimer.

    Redistributions in binary form must reproduce the above copyright notice, this list
    of conditions and the following disclaimer in the documentation and/or other
    materials provided with the distribution.

    Neither the name of the IPython Development Team nor the names of its contributors
    may be used to endorse or promote products derived from this software without
    specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
    IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

About the IPython Development Team
==================================

Fernando Perez began IPython in 2001 based on code from Janko Hauser <jhauser@zscout.de> 
and Nathaniel Gray <n8gray@caltech.edu>.  Fernando is still the project lead.

The IPython Development Team is the set of all contributors to the IPython project.
This includes all of the IPython subprojects. Here is a list of the currently active contributors:

	* Matthieu Brucher
	* Ondrej Certik
	* Laurent Dufrechou
	* Robert Kern
	* Brian E. Granger
	* Fernando Perez (project leader)
	* Benjamin Ragan-Kelley
	* Ville M. Vainio
	* Gael Varoququx
	* Stefan van der Walt
	* Tech-X Corporation
	* Barry Wark

If your name is missing, please add it.  

Our Copyright Policy
====================

IPython uses a shared copyright model. Each contributor maintains copyright over
their contributions to IPython. But, it is important to note that these
contributions are typically only changes to the repositories. Thus, the IPython
source code, in its entirety is not the copyright of any single person or
institution. Instead, it is the collective copyright of the entire IPython
Development Team. If individual contributors want to maintain a record of what
changes/contributions they have specific copyright on, they should indicate their
copyright in the commit message of the change, when they commit the change to
one of the IPython repositories.

Miscellaneous
=============

Some files (DPyGetOpt.py, for example) may be licensed under different
conditions. Ultimately each file indicates clearly the conditions under
which its author/authors have decided to publish the code.

Versions of IPython up to and including 0.6.3 were released under the
GNU Lesser General Public License (LGPL), available at
http://www.gnu.org/copyleft/lesser.html.